KR102302355B1 - Air purifier with improved removal property of harmful substances and viruses in the air - Google Patents

Abstract

The present invention relates to an air purifier, and more specifically, to an air purifying apparatus capable of removal of harmful substances and viruses in the air. The air purifying apparatus in accordance with the present invention comprises: a body portion having an air inlet at a lower end, and an air outlet at an upper end, and having a flow path formed therein to enable air to rise; a pre-filter installed in a conduit of the body portion; a tubular cell-type discharge device installed in the conduit of the body portion to generate active species; a dust collecting device comprising a discharge portion including a linear discharge electrode installed in the conduit in the body portion, and a dust collecting portion for collecting dust charged in the discharge portion; an ozone removal device for removing ozone generated from the discharge device and/or the dust collecting device installed in the conduit in the body portion. Therefore, the air purifier can reduce the emission of ozone.

Description

Air purifier with improved removal property of harmful substances and viruses in the air

The present invention relates to an air purifier, and more particularly, to an air purifier capable of removing harmful substances and viruses in the air.

As diseases caused by viruses such as COVID-19 are prevalent, demand for air purifiers that can remove not only pollutants such as fine dust from the air, but also fungi such as viruses and bacteria is increasing.

Korean Patent Laid-Open No. 10-2007-0094026 discloses an air conditioner including a streamer discharge mechanism in an air passage, a catalyst means activated by active species generated by the streamer discharge, and a dust collector.

This method is effective in that a large amount of active species generated by the streamer discharge can inactivate the virus by destroying the protein or lipid of the virus contained in the air to be treated, but the streaming discharge device lowers the air flow, There is a problem with the generation of ozone. In particular, ozone can cause a harmful effect on the human body at a concentration of 30 ppb or more. Therefore, in order to use it as an air purifier indoors, a method to solve the problem of ozone generation is required.

In order to solve this problem, in Korean Patent Laid-Open No. 10-2020-0064670, 'Plasma sterilization module and air purifier having the same', the structure of the discharge device is improved in a method in which the streamer discharge and the glow discharge are combined to increase the discharge efficiency, thereby increasing the ozone Suggest ways to prevent the occurrence of

However, in this method, since all the discharge electrodes are located in one space, the discharge electrodes affect each other, making it difficult to form a uniform electric field, thereby reducing efficiency. Ozone is not generated. In addition, there is a problem in that it is difficult to solve the ozone generation.

In addition, since the glow discharge and the streamer discharge device serving as dust collectors are installed together, a problem of contamination of the streamer discharge area by the glow discharge occurs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a new air purifier capable of effectively solving problems of efficiency decrease due to non-uniform electric field, device contamination due to discharge and dust collection, and ozone generation.

An object to be solved by the present invention is to provide a new air purification method that can effectively solve the problems of efficiency decrease due to a non-uniform electric field, device contamination due to discharge and dust collection, and ozone generation.

In order to solve the above problems, the present invention

a body portion having an air inlet at the lower end, an air outlet at the upper end, and having a flow path through which air rises therein;

a pre-filter installed in the conduit of the body part;

A tubular cell type discharge device for generating active species installed in the conduit of the body part,

A dust collector comprising: a discharge unit including a linear discharge electrode installed in a conduit in the body; and a dust collecting unit for collecting dust charged in the discharge unit;

an ozone removal device for removing ozone generated from a discharge device and/or a dust collector installed in a pipe in the body portion; and

It provides an air purifying device including a fan installed in the conduit of the body portion.

Although not limited in theory, in the air purification device according to the present invention, a tubular cell-type discharge device that generates active species including radicals forms a uniform electric field by disposing needle-type discharge electrodes in each cell, so that the active species are discharged By being uniformly formed in the device, it is possible to suppress the generation of ozone by increasing the efficiency, and by removing the generated ozone, it is possible to prevent it from being discharged into the room through the outlet, so that safe and purified air can be provided do.

In the present invention, one side of the body part may be a body part having an opening for putting in and out on the side so that the tubular cell type discharge device and the dust collector can be put in and out of the body part in a drawer type.

In the practice of the present invention, support shelves may be formed on the body portion to face the inner wall so that the pre-filter, the discharge device, the dust collector, and/or the ozone removal device can be moved in and out by sliding.

In the present invention, the pre-filter may be a mesh-type filter used to prevent dust, dust, moisture, etc. from entering the air purifier by the fan or a filter having permeability corresponding thereto.

In the present invention, the tubular cell type discharge device may be a streamer discharge device.

In the present invention, the tubular cell-type discharge device includes a first electrode plate in which tubular cells of a predetermined length are contiguously and vertically arranged repeatedly, and a second electrode plate in which needle-type emission electrodes are arranged in each of the tubular cells. can do.

In the present invention, the tubular cell type discharge device may be a streamer discharge device.

In the present invention, in the tubular cell-type discharge device, the tubular cells may have the same diameter so as to form a uniform electric field, and tubular cells having the same size and rectangular cross section may be used.

In the practice of the present invention, the tubular cells may have a hole formed in the wall surface for active species mixing with other adjacent tubular cells.

In the present invention, the needle-type emission electrode may be formed of a holder positioned at the center of the tubular cells, and a plurality of needles protruding from the holder toward the wall surface of the tubular cell.

In the practice of the present invention, the needles may protrude at a position corresponding to the hole formed in the wall surface of the cell.

In an embodiment of the present invention, the first electrode plate and the second electrode plate may have side surfaces fixed to an open top and bottom tubular case to form a discharge module.

In the present invention, the dust collector including the linear discharge electrode includes a linear discharge electrode formed of metal lines arranged in parallel at predetermined intervals and a counter electrode plate disposed between the metal lines forming the linear discharge electrode. and a dust collecting unit composed of a plurality of dust collecting plates for collecting the ionized particles discharged from the discharge unit.

In the present invention, the linear discharge electrode may be formed of nano-metal wires, preferably, a yan-type metal wire in which stainless nano-metal wires are twisted.

In the practice of the present invention, the discharge unit and the dust collecting unit may form a dust collecting module by fixing the side surfaces of the upper and lower open tubular cases.

In the present invention, the ozone removal device may be a catalyst removal device and/or a light removal device, preferably a combination of a catalyst removal device and a light removal device.

In the practice of the present invention, the catalyst removal device may be a catalyst plate that forms a horizontal plate by connecting tubular cells filled with catalyst particles to the left and right. The tubular cells of the catalyst plate may be honeycomb-type tubular cells, and meshes may be attached to the lower and upper surfaces to allow catalyst release and air permeation.

In a preferred embodiment of the present invention, the catalyst plate may be a multi-layered plate, and the side of the catalyst plate may be fixed to a tubular case open up and down to form a catalyst module. The catalyst used in the catalyst module may be commercially purchased and used as a known manganese dioxide-based catalyst.

In the practice of the present invention, the light removal device may be a device capable of irradiating UV to the gas. The UV may be irradiated by an LED, and preferably, a plate in which UV LED chips are aligned may be attached to the inside of the body.

In the present invention, the fan may be a rotating fan, and may be a conventional rotating fan that sucks air from the lower part and discharges it to the upper part.

In the present invention, the air purifier may further include an anion generating device at the upper end, and may mix negative ions with the air discharged from the air purifier and discharge them.

The present invention in one aspect,

flow of air

a treatment step of passing the flowing air through a tubular cell type discharge device for generating active species;

a dust collecting step of passing the flowing air through a dust collecting device including a linear discharge electrode;

an ozone removal step of removing ozone generated from the discharge device and/or the dust collector;

It provides an air purification method comprising a.

In the present invention, the air purification method may further include the step of generating negative ions.

In the present invention, the ozone removal step may include catalyst adsorption and/or photolysis.

In the present invention, when ozone is removed by the catalyst, it is preferable to further include the step of removing moisture to protect the catalyst.

The air purifying device according to the present invention can increase the treatment efficiency by forming a uniform electric field by the tubular cell type discharge device, thereby reducing the emission of ozone. In addition, an air purifier that reduces ozone

A new air purifying device capable of preventing the emission of generated ozone while exhibiting high efficiency has been provided.

1 is a front perspective view showing the exterior of an air purification apparatus according to the present invention.
2 is a view showing the rear surface of the air purification apparatus according to the present invention.
3 is a view showing an exploded perspective view in the front direction of the air purification apparatus according to the present invention.
4 is a view showing an exploded perspective view in the rear direction of the air purification apparatus according to the present invention.
5 is a view showing a perspective view of a tubular cell type discharge device according to the present invention.
6 is an exploded perspective view of a discharge device according to the present invention.
7 is a view showing a perspective view of a first electrode plate constituting the discharge device according to the present invention.
8 is a view showing the coupling state of the perforated support plate of the second electrode plate constituting the discharge device according to the present invention and the electrode support rod coupled to the perforated support plate;
9 is an explanatory view showing an operating state of the discharge device according to the present invention.
10 is a perspective view of a dust collector according to the present invention.
11 is an exploded perspective view of the dust collector according to the present invention.
12 is an explanatory view showing the operating state of the dust collector according to the present invention;
13 is a plan view of a catalyst device for removing ozone according to the present invention.
FIG. 14 is a view showing a cross-section taken along line AA′ of FIG. 13 .
15 is an explanatory diagram showing the processing sequence of the present invention.

Hereinafter, the present invention will be described in detail through examples. The following examples are intended to illustrate the present invention, not to limit the present invention.

1 to 4, the body portion 100 of the air purification device 10 according to the present invention has a rectangular shape as a whole, and has a front surface 110, both side surfaces 120, a rear surface 130 and a lower surface ( 140) and an upper surface 150.

The air outlet 111 is formed in the upper part of the front surface 110, and the air inlet 141 is formed in the lower surface 140, and after air is introduced from the air inlet 141 of the lower surface, it is cleaned while moving upward from the inside. After the process, it is discharged to the air outlet 111 .

An exhaust cover 112 that can adjust the direction of exhausted air forward, backward and left and right is attached to the air exhaust port 111 located on the upper side of the front surface 111 , and an operation panel capable of controlling the operation of the air purification device 10 . 113 and a substrate 114 for a panel are formed.

The front surface 111 and both side surfaces 120 are integrally formed by bending a single rectangular plate in a U-shape.

The rear surface 130 has an opening and closing portion 131 that can be separated from the body portion 100 when necessary.

The lower surface 140 is made of a rectangular plate, and a movable wheel 141 for spaced apart from the floor is attached to the lower portion of the plate, and an air inlet 142 is formed in the center.

An inner bracket 200 for installing a modularized treatment device is inserted into the body portion 100 of the air purification device 10 .

The inner bracket 200 is made of a rectangular parallelepiped having a size that can be inserted into the body portion 100 , and has a height corresponding to the lower end of the air outlet 112 from the lower end of the body portion 100 .

The front 210 and both sides 220 of the inner bracket 200 are closed except for a part, the lower surface 240 and the upper surface 250 are open, and the rear surface 230 is the modularized processing device. A plurality of pedestals 232 for depositing and withdrawing are formed so that an in and out port 231 is formed, and the modularized processing devices can be deposited and deposited in the drawer while sliding in a drawer type. A semi-circular guide plate 250 is installed on the upper portion of the inner bracket 200 for the smooth discharge of air.

The modularized treatment device installed inside the inner bracket 200 in a retractable manner includes a pre-filter 300 capable of filtering out large dust at the bottom; a tubular cell-type discharge device 400 for generating active species including radicals positioned on the pre-filter 300; a dust collector 500 installed on the tubular cell-type discharge device 400; It is installed on the upper end of the dust collector 500 and consists of a catalyst device 600 for removing ozone that absorbs and removes ozone.

On the inner surface of the inner bracket 200, the ozone removal light irradiation device 700 for irradiating UV light is attached to the upper end of the ozone removal catalyst device 600 in the form of a printed circuit board and installed, and the inner bracket 200 An air fan 800 for sucking and discharging air inside the guide plate 250 is installed at the upper portion of the guiding plate 250 .

In order to add negative ions to the air discharged by the air fan 800 , the negative ion generating device 900 is installed at the air outlet 111 .

The pre-filter 300 uses a sponge-type pre-filter having a thin plate shape so that it can be installed at the lower end of the inner bracket 200 .

5 to 9 , the tubular cell-type discharge device 400 includes a first electrode plate 410 in which rectangular tubular cells 411 of a predetermined length are contiguously and vertically arranged repeatedly, and An electrode support rod 421 built one by one inside the tubular cell 411, a needle-type discharge electrode 422 protruding at a predetermined interval according to the height of the electrode support rod 421, and perforated so as not to obstruct the flow of the air and a second electrode plate 420 including a perforated support plate 423 on which the electrode support rods 421 are supported, and the side portions of the first electrode plate 410 and the second electrode plate 420 are combined. It consists of a rectangular tubular case 430 opened up and down.

A handle 431 for putting in and out is formed on the outer surface of the square cylindrical case 430 for the convenience of putting in and out, and a plastic insulating member 432 for sliding and insulation is attached to four upper and lower parts.

A plurality of mixing holes 412 are formed on the wall surfaces of the square-tubular cells 411 of the first electrode plate 410 so that active species generated in each square-tubular cell 411 can be uniformly mixed.

The electrode support rod 421 and the needle-type emission electrode 422 are manufactured by cutting one thin plate, and the lower end is bent and vertically attached to the perforated support plate 423 .

As shown in FIG. 9 , the position of the needle-type emission electrode 422 is arranged to correspond to the mixing hole 412 formed on the wall surface of the square tube-type cell 411 , and needle-type emission from the periphery of the mixing hole 412 . A cone-shaped electric field is formed by the electrode 422 , so that the emitted active species can move to the adjacent rectangular tubular cell 411 through the mixing hole 412 , thereby forming a uniform electric field as a whole, untreated air (black arrow) changes to treated air (white arrow).

10 to 12 , the dust collector 500 including the linear discharge electrode includes a rectangular cylindrical case 510 for dust collection, a discharge unit 510 disposed at a lower end thereof, and an upper end thereof. It consists of a dust collecting unit (520). The discharge unit 510 disposed at the lower end of the dust collector 500 generates a positive corona to convert particles flowing from the bottom into (+) particles, and is disposed at the upper end of the dust collector 500 . The dust collecting unit 520 attaches the positively charged particles to the negatively charged dust collecting plate and collects the dust.

The square cylindrical case 510 for dust collection forms the outer surface of the dust collector 500 , and plastic insulating members 511 for sliding and insulation are attached to the upper and lower four places.

The discharge unit 520 includes a linear discharge electrode 521 in which metal lines are arranged in parallel at predetermined intervals, and a counter electrode plate 522 alternately arranged between the metal lines forming the linear discharge electrode 521 . do.

The dust collecting unit 530 is disposed such that the positive dust collecting plate 531 and the negative dust collecting plate 532 are spaced apart from each other by a predetermined interval, and collects positively charged particles from the negative dust collecting plate 532 .

The particles flowing into the dust collector 500 are either treated particles from the tubular cell-type discharge device 400 located at the lower end, or neutral-state particles that have passed through untreated particles.

As shown in FIG. 12 , the particles (white arrow) introduced from the tubular cell-type discharge device 400 pass through the discharge unit 520 including the linear discharge electrode 521 at the bottom and are positively affected by the positive corona. of the particles (red arrow), and passing through the dust collecting unit 530 at the top, the electrostatic repulsive force with the positive dust collecting plate 531 and the negative dust collecting plate 532 with the negative dust collecting plate ( 532), the air containing ozone generated in the process exits the dust collecting unit (530).

The air that has passed through the dust collector 500 contains ozone generated during the treatment process, and is introduced into the ozone removal catalyst device 600 installed on the upper part for removal thereof.

As shown in FIG. 13 , in the ozone removal catalyst device 600 , a mesh 612 is installed at the top and bottom of the filling plate 611 made of honeycomb-shaped cells, and catalyst particles for ozone removal therein. (613) is made of a filled honeycomb plate (610). The ozone removal catalyst particles 613 are spherical and/or cylindrical manganese dioxide-based particles, and can be purchased and used commercially. As shown in FIG. 14 , the ozone removal catalyst device 600 is made of one or more, preferably, two honeycomb plates 610 .

As shown in Fig. 15, the air purification device 10 according to the present invention is made in the following order. When the air purifier 10 is operated, the air fan 800 at the top operates to form an upward flow inside the device, and polluted air is introduced from the lower surface.

The introduced air undergoes a dust removal step S1 in which dust is removed while passing through the pre-filter 300 .

Through the dust removal step (S1), the air from which the dust has been removed passes through the tubular cell-type discharge device 400, and bacteria It undergoes a process step (S4) in which it is destroyed.

The air in which viruses and/or bacteria are killed during the treatment step (S2) passes through the dust collector 500 and is not filtered by the pre-filter 300 like fine dust contained in the air, and is a tubular cell type A dust collecting step (S3) of collecting the components not killed by the discharge device 400 is performed.

In order to remove ozone generated through the process up to the dust collecting step (S3), the collected air passes through the ozone removal catalyst device 600, and the ozone is removed while passing through the UV LED light irradiation device 700. It goes through the ozone removal step (S4). In the ozone removal step ( S4 ), ozone is converted into oxygen and desorbed after being adsorbed by the catalyst device 600 , and the remaining ozone that has not been adsorbed is converted into oxygen by the UV irradiation device 700 .

The air that has gone through the ozone removal step (S4) is mixed with the negative ions generated by the negative ion generator 900 in the process of being discharged to the outside by the air fan 800, and then goes through the negative ion mixing step (S5).

10: air filter
100: body
200: inner bracket
300: pre-filter
400: tubular cell type discharge device
500: dust collector
600: catalyst device for ozone removal
700: light irradiation device for ozone removal
800: air fan
900: negative ion generator

Claims (14)

a body portion having an air inlet at the lower end, an air outlet at the upper end, and having a flow path through which air rises therein;
a pre-filter installed in the conduit of the body part;
A modular tubular cell-type discharge device installed in the conduit of the body portion to generate active species containing radicals to kill viruses, wherein the tubular cell-type discharge device is a product in which tubular cells of a predetermined length are connected and repeatedly arranged. 1 electrode plate, needle-type emission electrodes inserted into the tubular cells, a second electrode plate on which the needle-type emission electrodes are installed, and a retractable top and bottom electrode plate in which the first electrode plate and the second electrode plate are combined an open tubular case;
A modular dust collector installed separately from the tubular cell-type discharge device in a pipeline of the body to collect dead viruses and dust that have passed through the tubular cell-type discharge device, wherein the dust collector is the tubular cell-type discharge device A discharge unit including a linear discharge electrode for charging the dead virus and dust passing through, a dust collector including a dust collector for collecting dust charged in the discharge unit, and the discharge unit and the dust collector are coupled therein and a retractable top and bottom open tubular case;
an ozone removal device for removing ozone generated from a modular tubular cell-type discharge device and/or a modular dust collector installed in a pipeline in the body; and
Air fan installed in the conduit of the body part
Air purification device for virus removal comprising a.
According to claim 1,
The tubular cell-type discharge device and/or the dust collector is an air purification device for virus removal, characterized in that the drawer type is drawn in and out of the body. According to claim 1,
The tubular cell-type discharge device is an air purification device for virus removal, characterized in that it is a streamer discharge device. 4. The method of claim 1 or 3,
The retractable top and bottom open tubular case is a rectangular tubular case, and a plastic insulating member for sliding and insulation from the body is attached to four upper and lower portions of the rectangular tubular case. 5. The method of claim 4,
The tubular cell-type discharge device is an air purification device for virus removal, characterized in that a mixing hole is formed in the wall surface for mixing active species with other tubular cells adjacent to the tubular cell. 6. The method of claim 5,
A part of the mixing hole is an air purification device for virus removal, characterized in that formed at a position corresponding to the needle-type emission electrode. According to claim 1,
The dust collector including the linear discharge electrode includes: a discharge unit including a linear discharge electrode formed of metal lines arranged in parallel at predetermined intervals; and a counter electrode plate disposed between the metal lines forming the linear discharge electrode; Air purification device for virus removal, characterized in that it comprises a dust collecting unit consisting of a plurality of dust collecting plates for collecting the ionized particles discharged from the whole. 8. The method of claim 7,
The linear discharge electrode is an air purifier for virus removal, characterized in that the stainless nano-metal wires are twisted metal wires. According to claim 1,
The ozone removal device comprises a catalyst device for ozone removal and a light irradiation device for ozone removal. 10. The method of claim 9,
The ozone removal catalyst device is an air purification device for virus removal, characterized in that the tubular cells filled with catalyst particles containing manganese dioxide are connected to the left and right to form a horizontal plate. According to claim 1,
The air purification device for virus removal, characterized in that it further comprises a negative ion generating device.
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